LAUSR

Automorphisms of Formal Matrix Algebras

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0 Published in 2018 at "Siberian Mathematical Journal"

DOI: 10.1134/s0037446618050129

Abstract: We consider the automorphisms of formal matrix algebras over a given commutative ring. In some cases the automorphism group of these algebras is a semidirect product of certain subgroups whose structure is known. read more here.

Keywords: formal matrix; matrix algebras; automorphisms formal;

Formal Matrix Rings: Isomorphism Problem

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1 Published in 2023 at "Mathematics"

DOI: 10.3390/math11071720

Abstract: We consider the isomorphism problem for formal matrix rings over a given ring. Principal factor matrices of such rings play an important role in this case. read more here.

Keywords: isomorphism problem; matrix rings; formal matrix;